silly question

i have been told that for 5010 billing that all diagnosis submitted on a claim need to be linked to all CPT® for the bill to be accepted for processing by payors.
it was my understanding that as long as all the diagnosis reported were linked, not all procedures had to have multiple diagnosis unless med necess
for example :
the diagnosis are 272.4 ,401.1, 477.9, 789.00, 250.02
we bill:
99213-link to 272.4, 401.1,477.9 and 250.02
85025 link to 789.00

or do all the CPT® have to be linked to all diagnosis? if someone can clarify this for me thanks

re: silly question

It is my understanding that 5010 allows up to 12 diagnosis but no more than 4 can be linked to a line item. Not all procedures require multiple diagnosis codes. If one diagnosis code applies to a line item, it is linked.